Answers
Related Questions
HELP ME PLS 20 POINTS
Answers
Answer:
1- Se 2-Na 3- I guess Si as well 4-Ar 5-O
Explanation:
Ionization energy increases as we go right in periodIonization energy increases as we go upwards in groupsAtomic radius increases as we go downwards in groupsAtomic radius increases as we go left in periodsAtomic radius decreases as we go right in periods so when atoms loses electron or more the smaller its radius becomes3. If an item of trash is described as highly biodegradable, is that a physical property or
chemical property?.
Answers
Tara is an electrician. Which field of science does Tara need to know the most
about in order to do her job?
A. Life science
B. Earth science
C. Space science
D. Physical science
Answers
In paragraphs 11-16 of "Miss Brill," Mansfield includes the scene in which a young couple joins Miss Brill on her special bench. What is the significance of this scene? Select each correct answer. Miss Brill overhears their arguing and decides it is her role to interrupt and help them resolve their dispute. The story reaches its climax when Miss Brill realizes how others see her, and her sense of importance is destroyed. Miss Brill envisions the couple as the romantic heroes of the play she imagines all of them to be a part of The young couple takes the place of the old couple, just as younger generations replace older.
Answers
In paragraphs 11-16 of "Miss Brill," Mansfield includes the scene in which a young couple joins Miss Brill on her special bench and the significance of this scene includes the following:
The story reaches its climax when Miss Brill realizes how others see her, and her sense of importance is destroyed. Miss Brill envisions the couple as the romantic heroes of the play she imagines all of them to be a part of. What is the significance of this scene?In this scene, we can see Miss Brill having a good time in the park but coming to realize soon enough that the couple who she admired and planned to listen to did not think kindly of her. This made the woman sad even as she walked down to her home.
Her sense of importance was dealt a blow in this case. In this story also, Miss Brill applied her ability to envision a joyful scene.
Learn more about "Miss Brill," by Mansfield here:
https://brainly.com/question/27929142
#SPJ1
10) What will be the final pressure of a sample of nitrogen with a volume of 856 cm^3 at 661 torr and 25.0 ºC if it is heated to 60.0 ºC and given a final volume of 1160 cm^3?
Answers
ANSWER
The final pressure of the gas is 545.03 torr
EXPLANATION
Given that;
The initial volume of the gas is 856 cm^3
The initial pressure of the gas is 661 torr
The initial temperature of the gas is 25 degrees Celcius
The final temperature of the gas is 60 degrees Celcius
The final volume of the gas is 1160 cm^3
To find the final pressure of the gas, follow the steps below
Step 1; Write the general gas law
\(\text{ }\frac{P1V1}{T1}\text{ = }\frac{P2V2}{T2}\)Step 2; Convert the temperatures to degrees kelvin
\(\begin{gathered} \text{ t1 = 25}\degree C \\ \text{ T = t }+\text{ 273.15} \\ \text{ T = 25 + 273.15} \\ \text{ T = 298.15K} \\ \\ \text{ t2 = 60}\degree C \\ \text{ T = t }+\text{ 273.15} \\ \text{ T = 60 + 273.15} \\ \text{ T = 333.15K} \end{gathered}\)Step 3; substitute the given data into the formula in step 1
\(\begin{gathered} \text{ }\frac{661\text{ }\times\text{ 856}}{298.15}\text{ = }\frac{P2\text{ }\times\text{ 1160}}{333.15} \\ \text{ Cross multiply} \\ \text{ 661 }\times\text{ 856 }\times\text{ 333.15 = P1 }\times\text{ 1160 }\times\text{ 298.15} \\ 188,501,600.4\text{ = 345854 P2} \\ \text{ Divide both sides by 345854} \\ \frac{188501600.4}{345854}\text{ = }\frac{345854P2}{345854} \\ \text{ P2 = 545.03 torr} \end{gathered}\)Therefore, the final pressure of the gas is 545.03 torr
chuyển hoá Nh3 - chu trình ure
Answers
Answer:
umm translate
Explanation:
Which of the following statements is true?
A.
Chemical reactions can either absorb thermal energy or release thermal energy.
B.
Chemical reactions can only release thermal energy.
C.
Chemical reactions can only absorb thermal energy.
D.
Chemical reactions can neither absorb thermal energy nor release thermal energy.
Answers
Which of the following relationships between
the pressure P, the volume-V and the
e temperature T, represents an ideal gas
behaviour?
A.paVT
B.p TaT/V
C. pTaVet
D.pval/T
E. paV/T
Answers
Out of the options given, the expression that represents the ideal gas behavior is:
E. P × V / TWhat is ideal gas equation?The ideal gas law is expressed by the formula PV = nRT,
where
P is the pressure,
V is the volume,
n is the number of moles of gas,
R is the gas constant, and
T is the temperature.
By rearranging this equation, we can derive different expressions for the ideal gas behavior in terms of the pressure, volume, and temperature.
This can be obtained by rearranging the ideal gas law equation as follows:
PV = nRT
Dividing both sides by nT, we get:
P × V / (nT) = R
Since R is a constant for a given gas, the left-hand side of the equation must also be constant for an ideal gas. Thus, the expression P × V / T represents the ideal gas behavior.
Learn more about ideal gas at
https://brainly.com/question/27870704
#SPJ1
Gravity pulls rain and snow down to Earth from the atmosphere through a paire
process called precipitation Water is pulled from elevated areas such as
mountains and hills into lakes, oceans, and water reserviors. What is this
describing?*
role of gravity in the water cycle
role of gravity in condensation
O
role of gravity in evaporation
role of gravity in precipitation
Answers
Which of the following indicates that a molecule has 5 carbon atoms in its longest chain and contains an aldehyde?a. 3-methylbutanal.b. 2-pentanone.c. pentanal.d. 2-pentanol.
Answers
Pentanal is the molecule that shows that it has 5 carbon atoms in its longest chain and contains an aldehyde. Pentanal is the correct choice.
Generally, an aldehyde is described as any of a class of organic compounds in which a carbon atom usually shares a double bond with an oxygen atom and a single bond with a hydrogen atom and also a single bond with another atom or group of atoms.
Pentanal is an organic compound also known as valeraldehyde is an alkyl aldehyde with molecular formula C₅H₁₀O. Pentanal is basically used in flavorings, resin chemistry, and rubber accelerators etc. The smell of pentanal is described as fermented, bready, fruity, nutty, berry. Hence, the correct option is C.
Learn more about aldehyde from the link given below.
https://brainly.com/question/30665943
#SPJ4
Which of the following is a correct statement regarding the free energy?
It is energy available to create bonds.
It always has the same value.
It is stored between atoms.
It is known as kinetic energy.
Answers
Answer:
A
Explanation:
a. What is the definition of a mole? b. What is the abbreviation for mole? SARM c. How many particles are in one mole? d. What name is given to the number of particles in a mole?
Answers
Mole is base unit of substance. The number of particles in one mole is equal to 6.022 × 10²³. The number of particle in a mole is called as Avogadro's number.
The mole of substance is the amount of substance that contain elementary particles as the number of atoms. the symbol of mole is mol. it is the SI unit of amount of substance. The number particles are ion one mole of substances is 6.022 × 10²³. The number of particles in one mole of substance is called as Avogadro's number.
Thus, Mole is base unit of substance. The number of particles in one mole is equal to 6.022 × 10²³. The number of particle in a mole is called as Avogadro's number.
To learn more about moles here
https://brainly.com/question/26416088
#SPJ1
how an ionic compound made up of charged particles can be electrically neutral
Answers
Answer:
Explanation:
Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.
In a synthesis reaction, 2.43g of aluminum is reacted with 9.22g of chlorine. Show your work using a BCA table.
A. Find the limiting reactant
B.How many grams of the product will be produced?
Answers
Answer:
Chlorine gas is the limiting reactant
11.57 g
Explanation:
The equation of the reaction is;
2Al(s) + 3Cl2(g) -----> 2AlCl3(s)
The limiting reactant will produce the least number of moles of AlCl3.
For Al
Number of moles reacted = 2.43 g/27 g/mol = 0.09 moles
2 moles of Al yields 2 moles of AlCl3
0.09 moles of Al yields 0.09 * 2/2 = 0.09 moles of AlCl3
For Cl2
9.22g/71g/mol = 0.13 moles
3 moles of Cl2 yields 2 moles of AlCl3
0.13 moles of Cl2 yields 0.13 * 2/3 = 0.087 moles of AlCl3
Hence Cl2 is the limiting reactant
b) Mass of product produced = 0.087 moles of AlCl3 * 133g/mol = 11.57 g
what statements best describe the work of marie and pierre curie? check all that apply
Answers
Answer:
Discovered two new radioactive elements They came up with the term radio activity.conducted experiments with uranium-containing
Explanation:
Hydrogen reacts with oxygen according to the balanced equation
2H₂ (g) + O2(g) → 2H₂O(g). If X is the number of molecules of H₂ which react,
then the number of O2 molecules reacting is
Answers
Answer:
x/2
Explanation:
X = 2 molecules of H2
For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.
I hope I'm understanding this question right.
Please help I need these answers
Answers
Answer:
false, true.
Explanation:
"That's because enzymes don't affect the free energy of the reactants or products" good luck!
Express the following in scientific notation:
1. 158000 km
2. 0.000009782 L
Answers
Answer:
1.58x10^5km
9.782x10^-6
Explanation:
Please Brainlist
HQ5.40
Homework Answered Due Today, 11:59 PM
The reaction 3H₂(g) + N₂(g) → 2NH3(g) has an enthalpy of reaction of -92.6 kJ/mol. If 1 g of hydrogen and 2 g of nitrogen are
reacted, how much heat is produced (kJ)?
Answers
The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ
How do i determine the heat energy produced?First, we shall obtain the limiting reactant. Details below:
3H₂ + N₂ -> 2NH₃
Molar mass of N₂ = 28 g/molMass of N₂ from the balanced equation = 1 × 28 = 28 g Molar mass of H₂ = 2 g/molMass of H₂ from the balanced equation = 3 × 2 = 6 gFrom the balanced equation above,
28 g of N₂ reacted with 6 g of H₂
Therefore,
2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂
We can see that only 0.43 g of H₂ is needed in the reaction.
Thus, the limiting reactant is N₂
Finally, we the amount of heat energy produced. Details below:
3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ
Molar mass of N₂ = 28 g/molMass of N₂ from the balanced equation = 1 × 28 = 28 gFrom the balanced equation above,
When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.
Therefore,
When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ
Thus the heat energy produced from the reaction is -6.61 KJ
Learn more about heat energy:
https://brainly.com/question/31429264
#SPJ1
What are maria?
A. O oceans on the face of the Moon
B. O large, flat areas formed by solar winds
C. O plains formed by ancient volcanic eruptions on the Moon
D. O craters that were formed by meteors striking the Moon
I think it is C what do you think? Tell me your answer = ) Down Below Thank you! I will give you 53 points!
Answers
Answer:
The wall that was retaken in attack on titan after a great battle.
See image for refrence
Explanation:
Answer:
it's B for sure because it's flat areas formed by solar winds
As a scuba diver descends toward the bottom of the ocean, she experiences the sensation of her ears "popping." Based on your observations from the Can Crush Lab, why would this happen? (2 points)
Decreased pressure inside the diver's oxygen tank causes pressure on the diver's ears.
Increased pressure inside the diver's oxygen tank causes pressure on the diver's ears.
Pressure increases on the diver as the diver descends deeper underwater.
Pressure decreases on the diver as the diver descends deeper underwater
Answers
Answer: Pressure increases on the diver as the diver descends deeper underwater.
Explanation:
which 5 systems help u change from a child to a adult
Answers
The five systems that helps us grow from a child to adult are excretory, integumentary, digestive, respiratory and cardiovascular system.
What are body systems?The body systems are the combination two or more systems located in the body that helps in the maintenance of hemostasis of the body.
Examples of body systems include the following:
Excretory system: This is the system that contains organs that helps in the removal of metabolic wastes from the body.The integumentary system: This is the system that protects the delicate internal organs of the body.The digestive system: This is the system that helps in the breaking down of food substances for body use.The respiratory system: This is the system that helps in the oxygenation of blood.The cardiovascular system: This is the system that helps in the pumping of blood throughout the body.Learn more about body systems here:
https://brainly.com/question/20200187
#SPJ1
Which of the following do all food chains in an ecosystem depend on?
A.
consumers
B.
competition
C.
decomposers
D.
producers
Answers
What is the ionic and net ionic equation for HCl + Mg(C2H3O2)2 = MgCl2 + HC2H3O2
Answers
The ionic and net ionic equation for HCl + Mg(C2H3O2)2 ⇒ MgCl2 + HC2H3O2 is H⁺ + Cl⁻ + Mg⁺ + C₂H₃O₂⁻ → Mg⁺ + Cl₂⁻ + H⁺ + C₂H₃O₂⁻.
What is ionic equation ?Ionic equations are chemical equations that only show the ions involved in a chemical reaction. In other words, ions that combine in solution to form new substances. The ions that do not participate are referred to as spectator ions.
A net ionic equation depicts only the chemical species involved in a reaction, whereas a complete ionic equation depicts the spectator ions as well.
Thus, H⁺ + Cl⁻ + Mg⁺ + C₂H₃O₂⁻ → Mg⁺ + Cl₂⁻ + H⁺ + C₂H₃O₂⁻ this is the net ionic equation.
To learn more about the ionic equation, follow the link;
https://brainly.com/question/29299745
#SPJ9
Write a persuasive essay stating which you believe is the most important Amendment to the U.S. Constitution: Amendment One, Four, or Six. Include three reasons to support your thesis.
Answers
Title: The First Amendment: Safeguarding Fundamental Freedoms
While all amendments are crucial, the First Amendment holds unparalleled significance in upholding the principles of liberty, equality, and democracy.
The First Amendment to the U.S. Constitution is undoubtedly the most important amendment as it safeguards fundamental freedoms that form the bedrock of a democratic society.
This amendment, which encompasses the rights of freedom of speech, religion, press, assembly, and petition, plays a vital role in protecting individual liberties and ensuring a just and inclusive society. There are three key reasons why the First Amendment stands out as the cornerstone of our democracy.
Firstly, freedom of speech allows citizens to express their ideas, opinions, and criticisms, fostering a robust marketplace of ideas essential for progress and social change. This right empowers individuals to challenge authority, hold public officials accountable, and engage in meaningful dialogue that drives societal progress.
Secondly, freedom of religion guarantees individuals the right to practice their faith without interference from the state. This principle promotes religious tolerance, diversity, and pluralism, creating a society where individuals can freely worship and live in accordance with their beliefs.
Lastly, freedom of the press ensures an informed citizenry by safeguarding independent journalism. A free press acts as a check on governmental power, exposes corruption, and provides essential information necessary for a functioning democracy.
For ore such questionns on Amendment visit:
https://brainly.com/question/28383565
#SPJ8
8. In order to find molarity, you must know what two things? *
Answers
Answer: - The moles of solute present in the solution.
- The volume of solution (in liters) containing the solute.
Explanation:
What is thermoplastics?
Answers
Answer:
A thermoplastic is any plastic material with a low melting point that becomes molten when heated, solid when cooled, and can be re-melted or molded after cooling. The curing process is completely reversible, and doing so will not compromise the material's physical integrity.
Credit to:https://www.fastradius.com/resources/thermoplastics-thermosets/#:~:text=A%20thermoplastic%20is%20any%20plastic,compromise%20the%20material's%20physical%20integrity.
Explanation:
How many mL of 2.25M H2SO4 are needed to react completely with 69.9g BaO2
Answers
Answer:
4 millllllermeeters jb
A person plugs a power cord into an electrical outlet in the wall. The power cord is covered in black rubber .Which statement is an accurate description of the materials?
Electrons would easily move through the person if there was no rubber around the wire
Electrons would not move through the wire if there was no rubber around the wire
Electrons easily move through the rubber around the wire
Electrons move through air when the cord is a few inches from the outlet
Answers
Answer:
A
Explanation: The rubber around the wire is an insulator, and the wire i would imagine would be made out of something like copper. Electricity runs through everything and without the insulator there, you'd be touching metal that electricity is running through.
Why is honesty important?
Answers
Honesty leads to a fulfilling, free life. Honesty is not just about telling the truth. It's about being real with yourself and others about who you are, what you want and what you need to live your most authentic life. ... Honesty sharpens our perception and allows us to observe everything around us with clarity.
(brainliest plz)